asdm access issue

Make sure that you have the following:

enable the http server

http server enable

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allow http (asdm) connections for management:

http <ip / network address> <mask> <interface>

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Make sure that you have the right information including the interface, which will be the interface that you are going to come in on. For example from the internet would likely be outside, from internal would likely be inside.

add a user for authentication:

username <user> password <pass>

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enable asdm for local login

aaa authentication http console LOCAL

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set the asdm image:

asdm image <image name>

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You can confirm that http management is enabled by issuing the following command:

show asp socket table

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You should see any output similiar to below:

ASA01(config)# sh asp table socket


Protocol   Socket    State      Local Address                                Foreign Address
SSL        00013878  LISTEN     X.X.X.X:443                          0.0.0.0:*
SSL        0002a978  LISTEN     172.30.235.1:443                             0.0.0.0:*
TCP        000339e8  LISTEN     X.X.X.X:22                           0.0.0.0:*
TCP        00046628  LISTEN     172.30.235.1:22                              0.0.0.0:*
DTLS      000530d8  LISTEN     X.X.X.X:443                          0.0.0.0:*
DTLS      4831e928  LISTEN     172.30.235.1:443                             0.0.0.0:*

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Once you confirm that it's listening on port 443.

You should be able to open a web browser and navigate to https://one of the ASAs ip addresses.

click through any warning that the browser gives about the certificate.

if this doesn't work, try a different browser.

You should be shown a page to download asdm.

Make sure you have java installed, and you should be able to install asdm and run it.